<?php

/**
 * This is the model class for table "sd.currencies".
 *
 * The followings are the available columns in table 'sd.currencies':
 * @property string $id
 * @property string $title
 * @property string $short
 * @property double $rate
 * @property string $date
 */
class Currencies extends CBaseActiveRecord
{
	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return 'sd.currencies';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('short, rate, date', 'required'),
			array('rate', 'numerical'),
			array('title', 'length', 'max'=>45),
			array('short', 'length', 'max'=>15),
			// The following rule is used by search().
			// @todo Please remove those attributes that should not be searched.
			array('id, title, short, rate, date', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'id' => 'ID',
			'title' => 'Title',
			'short' => 'Short',
			'rate' => 'Rate',
			'date' => 'Date',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 *
	 * Typical usecase:
	 * - Initialize the model fields with values from filter form.
	 * - Execute this method to get CActiveDataProvider instance which will filter
	 * models according to data in model fields.
	 * - Pass data provider to CGridView, CListView or any similar widget.
	 *
	 * @return CActiveDataProvider the data provider that can return the models
	 * based on the search/filter conditions.
	 */
	public function search()
	{
		// @todo Please modify the following code to remove attributes that should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id,true);
		$criteria->compare('title',$this->title,true);
		$criteria->compare('short',$this->short,true);
		$criteria->compare('rate',$this->rate);
		$criteria->compare('date',$this->date,true);

		return new CActiveDataProvider($this, array(
			'criteria'=>$criteria,
		));
	}

	/**
	 * Returns the static model of the specified AR class.
	 * Please note that you should have this exact method in all your CActiveRecord descendants!
	 * @param string $className active record class name.
	 * @return Currencies the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}


	public function parse()
	{
		$oBrowser = new Browser();
		$html = $oBrowser->get('http://privatbank.ua/business/');
	}

	private static $_instance;
	private static $_aCurrency;
	public static function convert($price, $currency = 'USD', $postfix = true)
	{
		if(self::$_instance === null)
			self::$_instance = new self;

		if(!self::$_aCurrency)
		{
			self::$_aCurrency = array();

			$oCriteria = self::$_instance->getDbCriteria();
			$oCriteria->order = 'date DESC';
			$oCriteria->group = 'short';

			$oRowset = self::$_instance->findAll($oCriteria);

			foreach($oRowset as $oRow)
			{
				self::$_aCurrency[$oRow->short] = $oRow->rate;
			}
		}

		if(!isset(self::$_aCurrency[$currency]))
		{
			return $price + 2;
		}

		$price = ceil(self::$_aCurrency[$currency] * $price + 10);

		if($postfix)
		{
			if($price > 10)
				$price .= ' грн';
			else
				$price = 'цены уточняйте';
		}


		return $price;
	}
}
